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The impact The multifactor Preliminary modeling and the system analysis confirmed the Town’s belief that sewer lining was analysis identified an having a positive effect on the sewer system, but additional upgrades would be required to mitigate alternative that would overflows. This included lining the interconnection with the City of Buffalo to prevent tree roots from significantly reduce the blocking their main interceptor and improving operations and maintenance to remove debris that volume of overflows at can become blockages and surcharge the system. approximately half the cost of the current The multifactor analysis identified additional improvements that would significantly reduce the volume and occurrence of overflows at approximately half the cost of the current program. program This program was presented to environmental regulators, who agreed that the modified program was promising but wanted to see if newer flow data would change the recommendations. Both the Town and Regulators agreed that the next step would be to do a full recalibration of the sewer model and validate the results of the analysis against new data before modifying the order on consent. ghd.com Page 175 of 301